<template>
    <div class="app-container">
        <el-form :model="queryParams" ref="queryForm" size="small" :inline="true" v-show="showSearch"
            label-width="68px">
            <el-form-item label="班级编号" prop="classNumber">
                <el-input v-model="queryParams.classNumber" placeholder="请输入班级编号" clearable
                    @keyup.enter.native="handleQuery" />
            </el-form-item>
            <el-form-item label="课程编号" prop="courseNumber">
                <el-input v-model="queryParams.courseNumber" placeholder="请输入课程编号" clearable
                    @keyup.enter.native="handleQuery" />
            </el-form-item>
            <el-form-item label="课程名称" prop="courseName">
                <el-input v-model="queryParams.courseName" placeholder="请输入课程名称" clearable
                    @keyup.enter.native="handleQuery" />
            </el-form-item>
            <el-form-item>
                <el-button type="primary" icon="el-icon-search" size="mini" @click="handleQuery">搜索</el-button>
                <el-button icon="el-icon-refresh" size="mini" @click="resetQuery">重置</el-button>
            </el-form-item>
        </el-form>

        <el-row :gutter="10" class="mb8">
            <el-col :span="1.5">
                <el-button type="primary" plain icon="el-icon-plus" size="mini" @click="handleAdd">新增</el-button>
            </el-col>
            <el-col :span="1.5">
                <el-button type="success" plain icon="el-icon-edit" size="mini" :disabled="single"
                    @click="handleUpdate">修改</el-button>
            </el-col>
            <el-col :span="1.5">
                <el-button type="danger" plain icon="el-icon-delete" size="mini" :disabled="multiple"
                    @click="handleDelete">删除</el-button>
            </el-col>

            <right-toolbar :showSearch.sync="showSearch" @queryTable="getList"></right-toolbar>
        </el-row>

        <el-table v-loading="loading" :data="kechengxinxiList" @selection-change="handleSelectionChange">
            <el-table-column type="selection" width="55" align="center" />
            <el-table-column label="ID" align="center" prop="id" />
            <el-table-column label="班级编号" align="center" prop="classNumber" />
            <el-table-column label="课程编号" align="center" prop="courseNumber" />
            <el-table-column label="课程名称" align="center" prop="courseName" />
            <el-table-column label="操作" align="center" class-name="small-padding fixed-width">
                <template slot-scope="scope">
                    <el-button size="mini" type="text" icon="el-icon-edit" @click="handleUpdate(scope.row)">修改
                    </el-button>
                    <el-button size="mini" type="text" icon="el-icon-delete" @click="handleDelete(scope.row)">删除
                    </el-button>
                </template>
            </el-table-column>
        </el-table>

        <pagination v-show="total > 0" :total="total" :page.sync="queryParams.pageNum"
            :limit.sync="queryParams.pageSize" @pagination="getList" />

        <!-- 添加或修改kechengxinxi对话框 -->
        <el-dialog :title="title" :visible.sync="open" width="500px" append-to-body @open="setRole">
            <el-form ref="form" :model="form" :rules="rules" label-width="80px">
                <el-form-item label="id" style="display: none;">
                    <el-input v-model="form.id" />
                </el-form-item>
                <el-form-item label="班级编号" prop="classNumber">
                    <el-input v-model="form.classNumber" placeholder="请输入班级编号" />
                </el-form-item>
                <el-form-item label="课程编号" prop="courseNumber">
                    <el-input v-model="form.courseNumber" placeholder="请输入课程编号" disabled />
                </el-form-item>
                <el-form-item label="课程名称" prop="courseName">
                    <el-select v-model="form.courseName" placeholder="请选择课程名称" @change="changehandle" style="width: 100%;">
                        <el-option v-for="item in rolesList" :key="item.id" :label="item.courseName"
                            :value="item.courseName">
                        </el-option>
                    </el-select>
                </el-form-item>
            </el-form>
            <div slot="footer" class="dialog-footer">
                <el-button type="primary" @click="submitForm">确 定</el-button>
                <el-button @click="cancel">取 消</el-button>
            </div>
        </el-dialog>
    </div>
</template>

<script>
// import { listKechengxinxi, getKechengxinxi, delKechengxinxi, addKechengxinxi, updateKechengxinxi } from "@/api/kechengxinxi/kechengxinxi";

export default {
    name: "Kechengxinxi",
    data() {
        return {
            // 遮罩层
            loading: true,
            // 选中数组
            ids: [],
            // 非单个禁用
            single: true,
            // 非多个禁用
            multiple: true,
            // 显示搜索条件
            showSearch: true,
            // 总条数
            total: 0,
            // kechengxinxi表格数据
            kechengxinxiList: [],
            // 弹出层标题
            title: "",
            // 是否显示弹出层
            open: false,
            // 查询参数
            queryParams: {
                pageNum: 1,
                pageSize: 10,
                classNumber: null,
                courseNumber: null,
                courseName: null
            },
            // 表单参数
            form: {},
            // 表单校验
            rules: {
            },
            // 所有课程列表
            rolesList: [],
            res: {}
        };
    },
    created() {
        this.getList();
    },
    methods: {
        resetForm() {
            this.$refs.queryForm.resetFields()
        },
        /** 查询kechengxinxi列表 */
        async getList() {
            this.loading = true;
            const { data: res } = await this.$http.get('/kechengxinxi/kechengxinxi/list', {
                params: this.queryParams
            })
            if (res.code !== 200) {
                return this.$message.error('操作失败')
            }
            this.kechengxinxiList = res.rows;
            this.total = res.total;
            this.loading = false;

        },
        // 取消按钮
        cancel() {
            this.open = false;
            this.reset();
        },
        // 表单重置
        reset() {
            this.form = {
                id: null,
                classNumber: null,
                courseNumber: null,
                courseName: null
            };
            this.resetForm("form");
        },
        /** 搜索按钮操作 */
        handleQuery() {
            this.queryParams.pageNum = 1;
            this.getList();
        },
        /** 重置按钮操作 */
        resetQuery() {
            this.resetForm("queryForm");
            this.handleQuery();
        },
        // 多选框选中数据
        handleSelectionChange(selection) {
            this.ids = selection.map(item => item.id)
            this.single = selection.length !== 1
            this.multiple = !selection.length
        },
        /** 新增按钮操作 */
        handleAdd() {
            this.reset();
            this.open = true;
            this.title = "添加课程信息";
        },
        /** 修改按钮操作 */
        async handleUpdate(row) {
            // this.reset();
            const id = row.id || this.ids
            const { data: res } = await this.$http.get('/kechengxinxi/kechengxinxi/' + id)
            if (res.code !== 200) {
                return this.$message.error('操作失败')
            }
            this.form = res.data;
            this.open = true;
            this.title = "修改课程信息";
        },
        // 获取列表循环渲染
        async setRole() {
            const { data: res } = await this.$http.get('/kechengjibenxinxi/kechengjibenxinxi/list')
            if (res.code !== 200) {
                return this.$message.error('操作失败')
            }
            // console.log(res.rows);
            this.rolesList = res.rows;
        },
        /** 提交按钮 */
        submitForm() {
            this.$refs["form"].validate(async valid => {
                if (valid) {
                    if (this.form.id != null) {
                        const { data: res } = await this.$http.post('/kechengxinxi/kechengxinxi/edit', {
                            id: this.form.id,
                            courseNumber: this.form.courseNumber,
                            courseName: this.form.courseName,
                            classNumber: this.form.classNumber
                        })
                        if (res.code !== 200) {
                            return this.$message.error('操作失败')
                        }
                        this.$message.success('操作成功')
                        this.open = false;
                        this.getList();
                    } else {
                        const { data: res } = await this.$http.post('/kechengxinxi/kechengxinxi', {
                            courseNumber: this.form.courseNumber,
                            courseName: this.form.courseName,
                            classNumber: this.form.classNumber
                        })
                        if (res.code !== 200) {
                            return this.$message.error('操作失败')
                        }
                        this.$message.success('操作成功')
                        this.open = false;
                        this.getList();
                    }
                }
            });
        },
        /** 删除按钮操作 */
        async handleDelete(row) {
            const ids = row.id || this.ids;
            const confirmResult = await this.$confirm('是否确认删除课程信息编号为"' + ids + '"的数据项？', '提示', {
                confirmButtonText: '确定',
                cancelButtonText: '取消',
                type: 'warning'
            }).catch(err => err);
            if (confirmResult !== 'confirm') {
                return this.$message.info('已取消删除')
            }
            const { data: res } = await this.$http.delete('/kechengxinxi/kechengxinxi/' + ids)
            if (res.code !== 200) {
                return this.$message.error('删除失败')
            }
            this.$message.success('删除成功')
            this.getList()
        },
        changehandle(e) {
            this.res = this.rolesList.find(function (item, index) {
                return item.courseName === e
            })
            this.form.courseNumber = this.res.courseNumber
        }
    }
};
</script>